RANKING · 2024 ACS · 56 SHOWN OF 56

Oldest housing stock, Montana counties

Montana counties ranked by oldest median year of construction (2024 ACS). This list covers the 56 counties in Montana that qualify, ranked against each other statewide. The median across all 56 is 1975. Biggest climber in the top 100 since 2020: Dawson County, MT, up 14 places to #10.

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SAME RANKING BYCities States Metros ZIP codes

RELATEDMost expensive homes Cheapest homes Highest median rent Lowest median rent Highest homeownership rate Highest renter share

YEAR1990 2010 2020 2024

RANKPLACESTATEPOPMEDIAN YEAR BUILTVS 1990

01Deer Lodge County, MTMT9,7091954+1%

02▲1Silver Bow County, MTMT36,1181956+1%

03▼1Prairie County, MTMT1,11219570%

04▲6Daniels County, MTMT1,6121958+1%

05▲3Wheatland County, MTMT2,1001958+1%

06▼1Teton County, MTMT6,4961962+1%

07▲5Sheridan County, MTMT3,43619630%

08▲3McCone County, MTMT1,72019640%

09▲6Custer County, MTMT12,03419650%

10▲14Dawson County, MTMT8,69219660%

11▼7Fergus County, MTMT11,8251966+1%

12▼5Powell County, MTMT7,15719660%

13▲5Liberty County, MTMT1,9571966+1%

14▼5Toole County, MTMT5,2111966+1%

15▲2Valley County, MTMT7,38519660%

16▲6Judith Basin County, MTMT2,1621967+1%

17▲2Chouteau County, MTMT5,8651968+1%

18▼4Pondera County, MTMT6,0721968+1%

19▲4Cascade County, MTMT85,0291970+1%

20▲6Hill County, MTMT16,1671971+1%

21▲6Blaine County, MTMT6,86019720%

22▼6Treasure County, MTMT7281972+1%

23▼10Wibaux County, MTMT8851973+1%

24▲6Glacier County, MTMT13,46319740%

25▼4Golden Valley County, MTMT8441974+1%

26▼6Phillips County, MTMT4,2031974+1%

27▲1Roosevelt County, MTMT10,24219740%

28▲6Carter County, MTMT1,3831975+1%

29▲7Musselshell County, MTMT5,5821975+1%

30▲2Big Horn County, MTMT12,75219760%

31▼25Meagher County, MTMT2,1371976+1%

32▼1Powder River County, MTMT1,7811976+1%

33▲9Carbon County, MTMT11,4661977+1%

34▼5Garfield County, MTMT1,1481978+1%

35▲6Rosebud County, MTMT8,25319780%

36▼3Beaverhead County, MTMT10,0431979+1%

37▲1Sweet Grass County, MTMT3,7621979+1%

38▲1Granite County, MTMT3,6581980+1%

39▲1Park County, MTMT18,2141980+1%

40▼3Richland County, MTMT11,3771980+1%

41▼16Fallon County, MTMT2,9591982+1%

42▲1Lewis and Clark County, MTMT75,3311982+1%

43▲5Lincoln County, MTMT22,3281982+1%

44Yellowstone County, MTMT172,6921982+1%

45Mineral County, MTMT5,1851983+1%

46▼11Petroleum County, MTMT5481983+1%

47▼1Missoula County, MTMT123,5131985+1%

48▲2Lake County, MTMT33,3921986+1%

49▼2Stillwater County, MTMT9,4451986+1%

50▲1Jefferson County, MTMT13,3291990+1%

51▲2Flathead County, MTMT115,4291991+1%

52▼3Ravalli County, MTMT48,5821991+1%

53▼1Sanders County, MTMT14,0621992+1%

54▲1Madison County, MTMT10,0261995+1%

55▲1Gallatin County, MTMT128,7401998+1%

56▼2Broadwater County, MTMT8,4932001+1%

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES